Standardize usage of virtual/override/final specifiers.

net/tools/quic/test_tools/packet_dropping_test_writer.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/tools/quic/test_tools/packet_dropping_test_writer.h"
 
 #include <limits>
 
 #include "base/rand_util.h"
 #include "net/tools/quic/quic_epoll_connection_helper.h"
 #include "net/tools/quic/quic_socket_utils.h"
 
 namespace net {
 namespace tools {
 namespace test {
 
 // An alarm that is scheduled if a blocked socket is simulated to indicate
 // it's writable again.
 class WriteUnblockedAlarm : public QuicAlarm::Delegate {
  public:
   explicit WriteUnblockedAlarm(PacketDroppingTestWriter* writer)
       : writer_(writer) {}
 
-  virtual QuicTime OnAlarm() override {
+  QuicTime OnAlarm() override {
     DVLOG(1) << "Unblocking socket.";
     writer_->OnCanWrite();
     return QuicTime::Zero();
   }
 
  private:
   PacketDroppingTestWriter* writer_;
 };
 
 // An alarm that is scheduled every time a new packet is to be written at a
 // later point.
 class DelayAlarm : public QuicAlarm::Delegate {
  public:
   explicit DelayAlarm(PacketDroppingTestWriter* writer) : writer_(writer) {}
 
-  virtual QuicTime OnAlarm() override {
-    return writer_->ReleaseOldPackets();
-  }
+  QuicTime OnAlarm() override { return writer_->ReleaseOldPackets(); }
 
  private:
   PacketDroppingTestWriter* writer_;
 };
 
 PacketDroppingTestWriter::PacketDroppingTestWriter()
     : clock_(nullptr),
       cur_buffer_size_(0),
       config_mutex_(),
       fake_packet_loss_percentage_(0),
@@ skipping 153 matching lines @@
     : buffer(buffer, buf_len),
       self_address(self_address),
       peer_address(peer_address),
       send_time(send_time) {}
 
 PacketDroppingTestWriter::DelayedWrite::~DelayedWrite() {}
 
 }  // namespace test
 }  // namespace tools
 }  // namespace net